/Engine/Source/Runtime/Landscape/Public/LandscapeEdit.h
This constructor will build an interface that works in the specified edit layer : InEditLayerGUID
FLandscapeEditDataInterface ( [ULandscapeInfo](API\Runtime\Landscape\ULandscapeInfo) * InLandscape, const [FGuid](API\Runtime\Core\Misc\FGuid) & InEditLayerGUID, bool bInUploadTextureChangesToGPU )